Rolling-mill bearing



G COOKE ROLLING MILL BEARING March 22, 1927.

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INV NToR. Wal/@ww- W? ATToR Patented Mar. 22, 1927.

GEORGE COOKE, OF MARTINS FERRY, OHIO.

ROLLING-MILL BEARING.

` Application led November 12, 1926. Serial No. 148,033.

This invention relates to bearings for-the rolls of sheet] tin plate and other rollingmills, and it as for its rimar object to provide a bearing for t e nec s of such rolls composed o a plurality of separate relatively isolated parts or elements among which the high stresses imposed in rolling are so distributed that none thereof is liable to be:ome unduly heated by friction, with the result that the necks of the rolls are maintained relatively cool.

A further object is to provide a bearing for roll necks in which thehorizontal pressures resulting from endwise movements of the rolls are received wholly by bearing parts or elements other than those which bear the vertical pressures or stresses imposed in rolling, and in which the bearing parts or elements which bear said vertical pressures are lnaintained wholly out of frictional contact with the fillets of the roll necks, whereby excessive heating both of the last mentioned bearing parts or elements and of the roll necks is prevented.

The above-mentioned prevent-ion of overheating, or reduction in friction heat units generated, results in a very greatly reduced loss'through the cracking and breakage of rolls, a reduction in the amount of lubricant required for the bearings, an increase in the reduction of the mill due to absence of deays heretofore required to allow the roll necks to cool, and the production of more uniform gauges of sheets or plates due to avoidance of the necessity for making frequent changes in the pressure screw adjustments when the roll necks have become heatedto dangerous temperatures.

With these and otherl objects in View, the

invention resides in the features of construe-- tion, arrangement of parts and combinations of elements which will hereinafter be fullydescribed, reference beinghad to the accompanying drawings, in which- Figure 1 is an end elevation of a set of rolling mill rolls with the adjacent part of the mill housing, illustratingthe application of the invention;

Figure 2 is a central vertical lsection of the same;

Figure?, is 'an enlarged det-all section on line 3-3,Fig. 1; and- Figure 1 is a similar view taken substan-V tially on line 1--4f, Fig. 1, showing the top bearing brass partly in side elevation and partly in longitudinal section.

The bearing which constitutes the present inventlon comprises a bottom bearing brass 1 u on which rests the neck 2 of the lower rol 3 of the mill, a top brass 4 which is seated upon the neck 5 of the up rroll 6, and side brasses or liners 7 locatede at op osite sides of each of the roll necks 2 and) 5.

The bottom brass 1, which is of approximately rectangular form, is immovably seated in a recess 8 rovided therefor in the mill housing 9 at t e lower end of the socalled` window 10 of the said housing, and `carries integrally with its body opposite laterally extendin lugs 11 which seat in corresponding poc ets 12 provided in the housing at opposite sides of the recess 8.v

The lugs 11 and their ockets 12 cooperate to maintain the body oi) the brass 1 against longitudinal shifting movement for maintaining the inner end of the latter spaced away from, or out 'of contact with, the flat portion of the adjacent end of the roll...

lso, for the dual purpose of preventing frictional engagement between the brass 1 and the fillet 1,3 of thelower roll and' of providing a pocket-like space for the reception of a quantity of the heavy grease employed as a lubricant, the inner end of said brass is beveled or` inclined in substantial parallelism to or with said fillet, as shown at 14 in Figs. 2 and 4.

The top brass 4, which seats in a recess 20 provided therefor in the overlying rider 15, corresponds in form with the bottom brass 1, having laterally directed lugs 11 which are received in pockets provided therefor in said rider, and having a beveled or inclined portion 14 in its inner end adjacent to the fillet of the upper roll. i

Lengthwise shifting of the rolls 3 and 6 to the extent that the fillets and fiat portions of the ends thereof closely approach the'adjacent ends of the top and bottom brasses is prevented by the side brasses or liners 7l' Said side liners, which are of substantially rectangular form, are seated in recesses 0r slots 16 prpvided therefor in the roll housings 9 at opposite sides of the window l() in positions wherein they are normally engaged b diametrically opposite sides of the roll nec s. Each of said liners has formed on its inner end an integral outwardly directed lug.y 17 which may either rest against the inner face of the housing in which it is 3. Said lugs 17 are designed as stops for limiting the extent of longitudinal, or endwise, movement of the rolls, thereby to prevent engagement of the fillets and flat end portions of the rolls with the adjacent ends of the stationarily mounted top and bottom brasses. Thus, as will be noted, all horizontal or end-thrust stresses imposed by the rolls upon the bearing described is sustained alone by said liners, so that t-he top and bottom brasses are maintained free from friction heat generated by such Stresses. .For minimizing the friction and heat so generated, each liner is formed at its inner end with an arcuately curved face 19 struck on a radius longer than that on which is struck the adjacent fillet, thus to prevent frictional Contact with said fillet.

From the foregoing it will be understood that the top and bottom brasses, upon which the high vertical pressures are imposed in the operation of the mill, are at no time permitted to come into frictional contact with the roll fillets and, therefore, do not directly impart to said filets the heat resultingr from such pressures. Moreover, the end thrust pressures being received alone by the lugs on the side brasses or liners which, because having only line contact with the roll necks and end contact with the flat portions of the `roll ends, are not liable to become heated to high temperatures and, therefore, can not impart high temperatures to the fillets. Due to the distribution of the heat created by the friction of vertical and horizontal stresses among the various bearing elements, as described, overheating of roll necks with its attendant evil results are practically eliminated.

1. A bearing for rolls, comprising in combination with a roll housing having therein recesses forming side and bottom bearing seats, and a rider having therein a recess forming a top bearing seat, said top and bottom seats having laterally disposed pocketsl in communication therewith, of top and bottom bearing brasses received within the top bearing seat of the rider and the bottom bearing seat of the housing, respectively, said brasses having lugs received in said pockets, whereby shifting of the brasses is prevented, and having their inner ends spaced away from the fillets of the rolls,

' and fiat-faced side liners mounted in the side seats of the housings, each of said liners having a member forming a stop for limit ing the extent of lengthwise shifting movement of the adjacent roll. i

2. A bearing for rolls, comprising, in combination with a roll housing having therein recesses forming side and bottom bearing seats, and a rider having therein a recess forming a top bearing seat, said top and bot tom seats having laterally disposed ,pockets in communication therewith, of top and bottom bearing brasses received Within the top bearing seat of the rider and the bottom bearing seat of the housing, respectively, said brasses having lugs received in said pockets, whereby shifting of the brasses is prevented. and having their inner ends wholly out of contact with the rolls, and liners mounted in the side seats of the housings, each of said liners being formed with a portion for abutting an end of the adjacent roll for maintaining the latter spaced away from said top and bottom brasses.

3. A bearing for rolls, comprising, in coinbination with a roll housing having therein recesses forming side and bottom bearing seats, and a rider having therein a recess forming a top bearing seat, said top and bottom seats having laterally disposed pockets in communication therewith, of top and bottom bearing brasses received within the top bearing seat of the rider and the bottom bearing seat of the housing, respectively, said brasses having lugs received in said pockets, whereby shifting of the brasses is prevented, and having their inner ends wholly out of contact with the rolls, and liners mounted in the side seats of the housings, each of said liners having an inner end lug adapted to be abutted by an end of the adjacent roll and whereby endwise shifting of said roll is limited to the extent that contact of the end and fillet ofthe latter with said brasses is prevented.

4. A bearing for rolls, comprising, in combination with a roll housing having therein recesses forming side and-bottom bearing seats, and a rider having therein a recess forming a top bearing seat, said top and bottom seats having laterally disposed pockets in communication therewith, of top and bottom bearing brasses received within the top bearing seat of the rider and the bottom bearing seat of the housing, respectivelyl said brasses having 'lugs received in said pockets, whereby shifting of the brasses is prevented, and having their inner ends wholly out of contact lwith the rolls, and liners mounted in the side seats of the housings, each of said\liners having an inner end lug adapted to be abutted by an end of the adjacent roll and whereby endwise shifting of said roll is limited to the extent that contact of the end and fillet of the latter with said brasses is prevented, each liner having the surface thereof which confronts the fillet of its roll shaped to prevent contact with the fillet.

In testimony whereof, I affix my signature. 

